Programming :: Displaying Particular Lines Via Grep ?

Apr 8, 2011

So For example I run this command:


But want to gerp / cut it in such a way that it only displays


Now the thing is that these 3 lines are not static.. there can be N number of lines there.. the only thing is that I want the command / output NOT to display the first line but the rest of the n lines ..

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Programming :: How To Grep Pattern Which Is Split In 2 Lines?

Dec 9, 2010

I need to grep a pattern which can be present in one line or could be split in 2 lines.Normal grep wont work in this case. Can anyone please help on this?There are 100's of files in which i need to search for this pattern so time is also a constrain.

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Programming :: Get Rid Of Unwanted Lines Without Grep -v In BASH?

Jun 9, 2009

I would like to know how I can get the ouput from the following dmidecode command in example 1 to look like example 2 without having to grep -v all the unwanted lines.Is there a way in awk or sed?Example 1

Processor Information
Socket Designation: Socket 1 CPU 1


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Programming :: Use Grep To Fetch Lines Contain 'AB_001'

Sep 17, 2010

I have such a file(test.txt) as below:


I want to use grep to fetch the lines contain 'AB_001'.


get the first 2 lines, not the 'AB_0011/10/105'.

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General :: Gentoo Starts But Hangs After Displaying Some Lines?

May 8, 2011

gentoo linux starts but hangs after displaying some lines, no error message, no panic, just stops after about 20 lines

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General :: Finding Surrounding Lines With Grep?

Aug 7, 2010

I know how to use grep to output a line that matches a string. But what if I also want to output one line above every line containing a matching string, how do I do that?

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General :: Grep - A-Z - Returns Unmatched Lines ?

Feb 21, 2011

Does anyone know why something like:

echo lowercase | grep [A-Z]

Would still return the lowercase line even tho there is no match?

Using --color will show there is no match but the line is still returned.

I am still new but from what i've learned this should not work like that. ubuntu 10.10

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General :: Grep And Store Two Lines In Other File

Feb 16, 2011

I have following contents

I want to grep "#2" and want the output as

How to using shell script?

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General :: Grep To Select Lines With M In Last Word

Mar 6, 2011

I have a large file in which each line has three or more blank-delimited words. I'd like to code a grep to keep only those lines which have the letter M in the last word. the M (if present) will be the first character in the last word.

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General :: Grep Varying No. Of Lines Between Two Patterns

Apr 11, 2011

I have a file that goes like this:

I need to grep the lines between pattern 1 and pattern 2 and not the lines following pattern 2. Cannot use grep -A(num), as there are varying number of lines following pattern 1. Also, used awk one-liners, but results are erroneous.

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General :: Use Grep To Match Multiple Lines?

Feb 3, 2011

I have done this before but i cant really recall now

I have a text file and i want to grep the word "interface" and 10 lines following it. I think there was some switch like grep -A or something ?

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General :: Grep Multiple Lines From A Text File

Jun 17, 2009

I have a list of words that I want to grep in many files to see which ones have it and which ones dont. in the text file I have all the words listed line by line, ex: list.txt:

try this
open space
list ..

I want to grep each line one by one. like I want it to

grep "check" *.log
grep "try this" *.log
grep "word1" *.log .. etc how can I do this?

and maybe write the output to a file.

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Programming :: Input File - Grep Within Grep

Nov 22, 2010

I need to kind of grep within grep. My input file would be something like:


and I need to find the first occurrence of hello before MY PATTERN (hello 9008 in this case), so the output should be:


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General :: Filtering Out Duplicate Lines From A Find/grep Output

Mar 22, 2010

I have some big files of logs that contain errors printed by an app. They are most of the time relevant, however most of them are similar. So i figured i could check what happened between a time interval with a find.

Im using this one


And I get an output similar to this one.


Is there a way to condensate the output lines to get only one or two, indicating the start and last occurrence of a block? Or I need to create a program to do so?

Because right now I get thousands of similar lines, but when I'm scrolling through them i sometimes miss relevant information that i would've otherwise noted if it wasn't all that spammy.

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Programming :: Remove Lines And Parts Of Lines From Python Strings?

Nov 24, 2009

How do you remove parts of strings using python? Such as, if I have something like:

erme1 sdifskenklsd
erme2 sdfjksliel


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Programming :: Socket Programming While Displaying Received Message In File

May 11, 2011

i have problem in socket programming, while displaying received message in file,i got a problem... i cant able to write it in the file.... this is the code....

/* tcpserver.c */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>

now my problem is run time error i can able to create file but i cant able to write file....log.txt contain nothing.... as here i have give sample code... dont say not initialising function and all.... i have initialised , please only see func1() - my problem is only not able to write msg which i got received from the client..

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General :: Grep Lines Containing A Certain String PLUS The Line Following That Line?

Sep 1, 2009

I have a dataset (see example below) that I would like to go through and copy all lines containing a certain string ("LGIG") plus the line immediately following that line to a new file. I have no problem grepping lines containing the string LGIG but I'm lost how to translate that to line number and shift up one line number for each instance of that string.

Example input file:


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Programming :: Using Awk For Displaying Of Row?

Jan 24, 2010


rina lives:fatin:20:20:20

i am having a small problem in extracting out the information from the database. For example, if i were to input a book titled rina into my search , i would only want it to display the row which has the title rina, like this



but when i use a coding like this :


grep -i "$Title" fruit| awk -F":" '{ print $0}'`

its displays both titles and their information


rina lives:fatin:20:20:20

for some reason, it will read both rows as both contains the word "rina".

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Programming :: Displaying The Information Using Awk?

Jan 14, 2010

i am using awk to display my information in a certain order.

Database :



My expected output is :


Title Price Author
Persia 42 John
France 50 Mabel


I tried using cut command but it also gives me the same problem. If i do not assign it to a variable, how am i able to format it to display it in the correct format?

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Programming :: Displaying Unicode Characters

Feb 19, 2011

I wrote a java program that writes strings to a file. The strings contain foreign language characters. When I run the program in Windows, the output file shows the foreign characters. However, when I attempt the same operation in Linux, the output file shows a white question mark in a black background instead of the foreign characters. The same Linux system could display the foreign characters if I copy the output file from Windows to Linux. I tried to create the output file using gedit that my program would then add additional strings to and chose Unicode-32 for encoding but still the same problem.

What could I do to get the program to display the foreign language characters from output text file?

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Programming :: Find What Is Displaying In A Terminal?

Jan 23, 2011

Is there any way to find what is displaying in a terminal in C language?

I want to automate ssh login process, I know that I can use "expect" but I want to write another program in C myself.

In first ssh try to a host, ssh prints a message like this:


The authenticity of host ' (' can't be established. RSA key fingerprint is **** Are you sure you want to continue connecting (yes/no)?

and waits for an answer. I want to enter "yes" programatically when the message appears, but I don't know how to find if the message is appeared or not. In this case problem can be solved in another way, deleting the entry of the host from ~/.ssh/known_hosts before executing the ssh command, sleeping for one or two second and entering yes. Same problem exist for password prompt and this can be solved by sleeping, too.

But it is not a general solution and can be failed if prompts appear after entering required keys.

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Programming :: Displaying A Maze Generated By A C Program ?

Oct 8, 2010

I want to write a program in C which will generate a maze randomly and find the solution for it ..

The idea behind is in [url]

How the 16 bit integer is stored in a variable...Earlier I wrote a program on trees and displayed it using dotty...Is there any such tool to display a maze...I am using ubuntu 10.04

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Programming :: Java Applet And Displaying Text

Mar 13, 2010

Im having various problems with the graphic printing features for applets.

In this immediate applet, when I print and update the previous line bleeds through the next line. I tried printing a series of spaces to clear the first text, but it doesn�t work.


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Programming :: Grep Not Getting Whole String?

Aug 23, 2010

I am trying to monitor how long an ldap search takes and maybe notify or something that a search takes longer than say 10 seconds.

tail -n 1000 /var/log/ldap.log
for SRCH in $( cat monitorldap.log |grep 'SRCH'); do
echo search string is
echo $SRCH


ok, so to start off with it doesn't appear to get the whole line, just a piece "Aug". How can I get the whole line into a variable so I can then cut it up into the pieces I need?

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Programming :: Grep -oE Not Portable?

Dec 28, 2010

I'm using Zabbix on which I can use give bash command to the agent.This 1-liner will give me all the interfaces with their IPv4 addresses.I have a 2nd expression which returns a checksum so I can detect a difference whenever someone deletes/adds/changes an ipv4 interface.This is the output on my Ubuntu-server:

~# ifconfig | grep -B1 ' inet ' | grep -oE '(^[a-z0-9:]*|addr:[0-9]+.[0-9]+.[0-9]+.[0-9]+)'


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Programming :: Grep Search Between N-m

Oct 5, 2010

How can i use grep (or any other command) to check for lines that begin with N number.

E.g. I want to print out commands (from history), but only from the command number 50 until #200.

This one doesn't work:

history | grep "^[50-200]"
Should print out something like:
50 cd ~/Desktop


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Programming :: Displaying I/O Possible When Reading Data From The Serial Port?

Aug 31, 2009

I have got a problem while reading from the serial port. I'm working on iMX-31 board and Eclipse IDE. Whenever I'm trying to read any data through the serial port, it's displaying I/O Possible and the application is being terminated. After reading I'm trying to write this data on a file. Here are the excerpts from the code:

# int main()
if (openport()<0)


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Programming :: Grep For Exact Number 0?

Aug 6, 2010

1) I need to search a field value to check for exact 0. If the number is 0, it should throw error.

The line to be searched looks like as below. "Output Rows [1], Affected Rows [1], Applied Rows [1], Rejected Rows [0]"

Here I have to search whether the affected rows is 0. But the code below picks up other values also (lie 10, 20.. etc). How do we write to get an exact match for 0? Code: affected=`echo ${line} | cut -f6 -d" " `

affectedcount='echo ${affected} |grep 0 ` 2) Also, I need to check whether the rejected rows > 0
Code: rejected=`echo ${line} | cut -f12 -d" " `
rejectedcount='echo {rejected} |grep [1-9]`

3)Can we combine these two statements in a better way to get the desired results?

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Programming :: Tell If Grep Didn't Return Anything?

Mar 15, 2011

I have a file:


I want to see if all the records in the file are present in the contents of the files of a particular directory.

Basically I want to say if grep doesn't return anything, then report.

For example in /tmp dir I have 4 files and flast 2 values (787862348 and 766428634) are present in the files of /tmp dir, but first one (979798707) is not. I want to echo that in a reporting file.

something like:

while read line
# if ! grep -rl $line /tmp
echo $line >> are_not_present
done < "myFile"

How do I achieve " if ! grep -rl $line /tmp"? That is, if the line is found by grep, then grep will print the output, but if grep does'nt find it, it will print nothing. How can I check if grep didn't find it (i.e. printed nothing)?

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Programming :: Alternative For Code: Wc -l Using Grep?

Mar 23, 2011

Can you find an alternative for Code: wc -l using grep?

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